<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Hello World</title>
    <script src="vue.js"></script>

</head>
<body>
    <div id="app">{{message}}</div>
</body>
<script>
            var app = new Vue({
                el: '#app',
                data: {
                    message: 'Hello Vue!'
                } 
            })
</script>
</html>